65 lines
2.4 KiB
C
65 lines
2.4 KiB
C
/*
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* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <jni.h>
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static jint* arr;
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JNIEXPORT jboolean JNICALL
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Java_TestCheckedReleaseArrayElements_init(JNIEnv *env,
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jclass* clazz,
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jintArray target) {
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jboolean isCopy;
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arr = (*env)->GetIntArrayElements(env, target, &isCopy);
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if (arr == NULL) {
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(*env)->FatalError(env, "Unexpected NULL return from GetIntArrayElements");
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}
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if (isCopy == JNI_FALSE) {
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(*env)->ReleaseIntArrayElements(env, target, arr, JNI_ABORT);
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}
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return isCopy;
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}
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JNIEXPORT void JNICALL
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Java_TestCheckedReleaseArrayElements_cleanup(JNIEnv *env,
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jclass* clazz,
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jintArray target) {
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(*env)->ReleaseIntArrayElements(env, target, arr, JNI_ABORT);
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}
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JNIEXPORT void JNICALL
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Java_TestCheckedReleaseArrayElements_fill(JNIEnv *env,
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jclass* clazz,
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jintArray target,
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jint start,
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jint count) {
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// Update a slice of the raw array
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int i;
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for (i = start; count > 0; i++, count--) {
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arr[i] = i;
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}
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// Write the results back to target, leaving it usable for future updates
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(*env)->ReleaseIntArrayElements(env, target, arr, JNI_COMMIT);
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}
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